La Boca
Description
Source: Wikipédia
The La Boca Formation is a geological formation in Tamaulipas state, northeast Mexico. It was originally thought to date back to the Early Jurassic, concretely the Pliensbachian stage epoch of 193-184 Ma. Later studies found that while the unit itself was likely deposited during the earliest Pliensbachian, as proven by zircon dating 189.0 ± 0.2 Ma, the local vulcanism (related to the aperture of the Atlantic Ocean and the several Rift Events) continued until the Bajocian.
However, the lower section of the fossil taxa deposited on the rocks above the La Boca Formation is likely of Late Pliensbachian-Lower Toarcian age, and the upper section of Late Toarcian-Late Aalenian age.
Due to successions of Aalenian depositional systems on the upper layers of the Huizachal Canyon, has been delimited the formation to the Toarcian stage, being the regional equivalent of the Moroccan Azilal Formation. Deposits of Late Triassic Age referred to this unit have been reclassified in a new formation, El Alamar Formation. In North America, La Boca Formation was found to be a regional equivalent of the Eagle Mills redbeds of southern United States, the Todos Santos Formation of southern Mexico and the Barracas Group of the Sonora desert region.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 4
Huizachal Canyon (general) : Tamaulipas - ? 7714 30640 36121 43803 61988 81945 82004 Huizachal Canyon, near towns of Huizachal, Anacahuita, and La Joya, 15 km SW of Ciudad Victoria, Tamaulipas, Mexico. Note that this is a general locality for collections that are simply given as "Huizachal Canyon". A number of additional collections from Huizachal Canyon are placed in separate PaleoDB collections- Dinosaur National Monument South, Huizachal Canyon : Tamaulipas - ? 36121 43803 79040 82030 Huizachal Canyon, near towns of Huizachal, Anacahuita, and La Joya, 15 km SW of Ciudad Victoria, Tamaulipas, Mexico.
- Rene's Roost, Huizachal Canyon : Tamaulipas - ? 36121 43803 74826 Huizachal Canyon, near towns of Huizachal, Anacahuita, and La Joya, 15 km SW of Ciudad Victoria, Tamaulipas, Mexico.
- Casa de Fidencio, Huizachal Canyon : Tamaulipas - ? 36121 81945 Casa de Fidencio sublocality, western end of Huizachal Canyon, near towns of Huizachal, Anacahuita, and La Joya, 15 km SW of Ciudad Victoria, Tamaulipas, Mexico.
Publication(s)
La base comprend 10 publication(s).
Source: The Paleobiology Database
- ↑1 2 J. M. Clark and J. A. Hopson. 1985. Distinctive mammal-like reptile from Mexico and its bearing on the phylogeny of the Tritylodontidae. Nature 315(6018):398-400 (https://doi.org/10.1038/315398a0)
- ↑1 H. E. Rivera-Sylva, R. Rodríguez-de la Rosa, and J. A. Ortiz-Mendieta. 2006. A review of the dinosaurian record from Mexico. Studies on Mexican Paleontology; Topics in Geobiology 24:233-248
- ↑1 2 3 4 5 6 R. C. Munter and J. M. Clark. 2006. Theropod dinosaurs from the Early Jurassic of Huizachal Canyon, Mexico. Amniote paleobiology: perspectives on the evolution of mammals, birds, and reptiles. University of Chicago Press, Chicago
- ↑1 2 3 4 J. M. Clark, M. Montellano, and J. A. Hopson, R. Hernandez, D. E. Fastovsky. 1994. An Early or Middle Jurassic tetrapod assemblage from the La Boca Formation, northeastern Mexico. In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods
- ↑1 R. Hernández-Rivera. 1997. Mexican dinosaurs. Encyclopedia of Dinosaurs
- ↑1 2 J. R. Guzmán-Gutiérrez and H. E. Rivera-Sylva. 2014. History of the discoveries of dinosaurs and Mesozoic reptiles in Mexico. Dinosaurs and Other Reptiles from the Mesozoic of Mexico
- ↑1 H. E. Rivera-Sylva and K. Carpenter. 2014. Mexican saurischian dinosaurs. Dinosaurs and Other Reptiles from the Mesozoic of Mexico
- ↑1 R. A. Rodríguez-de la Rosa. 2007. El estudio de los dinosaurios de México: historia, registro y perspectivas [The study of dinosaurs in Mexico: history, record and perspectives]. Investigación y Ciencia 15(37):49-58
- ↑1 H. E. Rivera-Sylva and K. Carpenter. 2014. The ornithischian dinosaurs of Mexico. Dinosaurs and Other Reptiles from the Mesozoic of Mexico
- ↑1 H. E. Rivera-Sylva and L. Espinosa-Arrubarrena. 2020. Remains of a diplodocid (Sauropoda: Flagellicaudata) from the Otlaltepec Formation Middle Jurassic (Bathonian-Callovian) from Puebla, Mexico. Paleontología Mexicana 9(2):145-150